net/atm/svc.c

   1 /* net/atm/svc.c - ATM SVC sockets */
   2
   3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
   4
   5
   6 #include <linux/string.h>
   7 #include <linux/net.h>          /* struct socket, struct proto_ops */
   8 #include <linux/errno.h>        /* error codes */
   9 #include <linux/kernel.h>       /* printk */
  10 #include <linux/skbuff.h>
  11 #include <linux/wait.h>
  12 #include <linux/sched.h>        /* jiffies and HZ */
  13 #include <linux/fcntl.h>        /* O_NONBLOCK */
  14 #include <linux/init.h>
  15 #include <linux/atm.h>          /* ATM stuff */
  16 #include <linux/atmsap.h>
  17 #include <linux/atmsvc.h>
  18 #include <linux/atmdev.h>
  19 #include <linux/bitops.h>
  20 #include <net/sock.h>           /* for sock_no_* */
  21 #include <asm/uaccess.h>
  22
  23 #include "resources.h"
  24 #include "common.h"             /* common for PVCs and SVCs */
  25 #include "signaling.h"
  26 #include "addr.h"
  27
  28
  29 #if 0
  30 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
  31 #else
  32 #define DPRINTK(format,args...)
  33 #endif
  34
  35
  36 static int svc_create(struct socket *sock,int protocol);
  37
  38
  39 /*
  40  * Note: since all this is still nicely synchronized with the signaling demon,
  41  *       there's no need to protect sleep loops with clis. If signaling is
  42  *       moved into the kernel, that would change.
  43  */
  44
  45
  46 static int svc_shutdown(struct socket *sock,int how)
  47 {
  48         return 0;
  49 }
  50
  51
  52 static void svc_disconnect(struct atm_vcc *vcc)
  53 {
  54         DEFINE_WAIT(wait);
  55         struct sk_buff *skb;
  56
  57         DPRINTK("svc_disconnect %p\n",vcc);
  58         if (test_bit(ATM_VF_REGIS,&vcc->flags)) {
  59                 prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
  60                 sigd_enq(vcc,as_close,NULL,NULL,NULL);
  61                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags) && sigd) {
  62                         schedule();
  63                         prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
  64                 }
  65                 finish_wait(vcc->sk->sk_sleep, &wait);
  66         }
  67         /* beware - socket is still in use by atmsigd until the last
  68            as_indicate has been answered */
  69         while ((skb = skb_dequeue(&vcc->sk->sk_receive_queue)) != NULL) {
  70                 atm_return(vcc, skb->truesize);
  71                 DPRINTK("LISTEN REL\n");
  72                 sigd_enq2(NULL,as_reject,vcc,NULL,NULL,&vcc->qos,0);
  73                 dev_kfree_skb(skb);
  74         }
  75         clear_bit(ATM_VF_REGIS, &vcc->flags);
  76         /* ... may retry later */
  77 }
  78
  79
  80 static int svc_release(struct socket *sock)
  81 {
  82         struct sock *sk = sock->sk;
  83         struct atm_vcc *vcc;
  84
  85         if (sk)  {
  86                 vcc = ATM_SD(sock);
  87                 DPRINTK("svc_release %p\n", vcc);
  88                 clear_bit(ATM_VF_READY, &vcc->flags);
  89                 /* VCC pointer is used as a reference, so we must not free it
  90                    (thereby subjecting it to re-use) before all pending connections
  91                    are closed */
  92                 svc_disconnect(vcc);
  93                 vcc_release(sock);
  94         }
  95         return 0;
  96 }
  97
  98
  99 static int svc_bind(struct socket *sock,struct sockaddr *sockaddr,
 100     int sockaddr_len)
 101 {
 102         DEFINE_WAIT(wait);
 103         struct sock *sk = sock->sk;
 104         struct sockaddr_atmsvc *addr;
 105         struct atm_vcc *vcc;
 106         int error;
 107
 108         if (sockaddr_len != sizeof(struct sockaddr_atmsvc))
 109                 return -EINVAL;
 110         lock_sock(sk);
 111         if (sock->state == SS_CONNECTED) {
 112                 error = -EISCONN;
 113                 goto out;
 114         }
 115         if (sock->state != SS_UNCONNECTED) {
 116                 error = -EINVAL;
 117                 goto out;
 118         }
 119         vcc = ATM_SD(sock);
 120         if (test_bit(ATM_VF_SESSION, &vcc->flags)) {
 121                 error = -EINVAL;
 122                 goto out;
 123         }
 124         addr = (struct sockaddr_atmsvc *) sockaddr;
 125         if (addr->sas_family != AF_ATMSVC) {
 126                 error = -EAFNOSUPPORT;
 127                 goto out;
 128         }
 129         clear_bit(ATM_VF_BOUND,&vcc->flags);
 130             /* failing rebind will kill old binding */
 131         /* @@@ check memory (de)allocation on rebind */
 132         if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) {
 133                 error = -EBADFD;
 134                 goto out;
 135         }
 136         vcc->local = *addr;
 137         set_bit(ATM_VF_WAITING, &vcc->flags);
 138         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 139         sigd_enq(vcc,as_bind,NULL,NULL,&vcc->local);
 140         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 141                 schedule();
 142                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 143         }
 144         finish_wait(sk->sk_sleep, &wait);
 145         clear_bit(ATM_VF_REGIS,&vcc->flags); /* doesn't count */
 146         if (!sigd) {
 147                 error = -EUNATCH;
 148                 goto out;
 149         }
 150         if (!sk->sk_err)
 151                 set_bit(ATM_VF_BOUND,&vcc->flags);
 152         error = -sk->sk_err;
 153 out:
 154         release_sock(sk);
 155         return error;
 156 }
 157
 158
 159 static int svc_connect(struct socket *sock,struct sockaddr *sockaddr,
 160     int sockaddr_len,int flags)
 161 {
 162         DEFINE_WAIT(wait);
 163         struct sock *sk = sock->sk;
 164         struct sockaddr_atmsvc *addr;
 165         struct atm_vcc *vcc = ATM_SD(sock);
 166         int error;
 167
 168         DPRINTK("svc_connect %p\n",vcc);
 169         lock_sock(sk);
 170         if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) {
 171                 error = -EINVAL;
 172                 goto out;
 173         }
 174
 175         switch (sock->state) {
 176         default:
 177                 error = -EINVAL;
 178                 goto out;
 179         case SS_CONNECTED:
 180                 error = -EISCONN;
 181                 goto out;
 182         case SS_CONNECTING:
 183                 if (test_bit(ATM_VF_WAITING, &vcc->flags)) {
 184                         error = -EALREADY;
 185                         goto out;
 186                 }
 187                 sock->state = SS_UNCONNECTED;
 188                 if (sk->sk_err) {
 189                         error = -sk->sk_err;
 190                         goto out;
 191                 }
 192                 break;
 193         case SS_UNCONNECTED:
 194                 addr = (struct sockaddr_atmsvc *) sockaddr;
 195                 if (addr->sas_family != AF_ATMSVC) {
 196                         error = -EAFNOSUPPORT;
 197                         goto out;
 198                 }
 199                 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
 200                         error = -EBADFD;
 201                         goto out;
 202                 }
 203                 if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
 204                     vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) {
 205                         error = -EINVAL;
 206                         goto out;
 207                 }
 208                 if (!vcc->qos.txtp.traffic_class &&
 209                     !vcc->qos.rxtp.traffic_class) {
 210                         error = -EINVAL;
 211                         goto out;
 212                 }
 213                 vcc->remote = *addr;
 214                 set_bit(ATM_VF_WAITING, &vcc->flags);
 215                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 216                 sigd_enq(vcc,as_connect,NULL,NULL,&vcc->remote);
 217                 if (flags & O_NONBLOCK) {
 218                         finish_wait(sk->sk_sleep, &wait);
 219                         sock->state = SS_CONNECTING;
 220                         error = -EINPROGRESS;
 221                         goto out;
 222                 }
 223                 error = 0;
 224                 while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 225                         schedule();
 226                         if (!signal_pending(current)) {
 227                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 228                                 continue;
 229                         }
 230                         DPRINTK("*ABORT*\n");
 231                         /*
 232                          * This is tricky:
 233                          *   Kernel ---close--> Demon
 234                          *   Kernel <--close--- Demon
 235                          * or
 236                          *   Kernel ---close--> Demon
 237                          *   Kernel <--error--- Demon
 238                          * or
 239                          *   Kernel ---close--> Demon
 240                          *   Kernel <--okay---- Demon
 241                          *   Kernel <--close--- Demon
 242                          */
 243                         sigd_enq(vcc,as_close,NULL,NULL,NULL);
 244                         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 245                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 246                                 schedule();
 247                         }
 248                         if (!sk->sk_err)
 249                                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags)
 250                                     && sigd) {
 251                                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 252                                         schedule();
 253                                 }
 254                         clear_bit(ATM_VF_REGIS,&vcc->flags);
 255                         clear_bit(ATM_VF_RELEASED,&vcc->flags);
 256                         clear_bit(ATM_VF_CLOSE,&vcc->flags);
 257                             /* we're gone now but may connect later */
 258                         error = -EINTR;
 259                         break;
 260                 }
 261                 finish_wait(sk->sk_sleep, &wait);
 262                 if (error)
 263                         goto out;
 264                 if (!sigd) {
 265                         error = -EUNATCH;
 266                         goto out;
 267                 }
 268                 if (sk->sk_err) {
 269                         error = -sk->sk_err;
 270                         goto out;
 271                 }
 272         }
 273 /*
 274  * Not supported yet
 275  *
 276  * #ifndef CONFIG_SINGLE_SIGITF
 277  */
 278         vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp);
 279         vcc->qos.txtp.pcr = 0;
 280         vcc->qos.txtp.min_pcr = 0;
 281 /*
 282  * #endif
 283  */
 284         if (!(error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci)))
 285                 sock->state = SS_CONNECTED;
 286         else
 287                 (void) svc_disconnect(vcc);
 288 out:
 289         release_sock(sk);
 290         return error;
 291 }
 292
 293
 294 static int svc_listen(struct socket *sock,int backlog)
 295 {
 296         DEFINE_WAIT(wait);
 297         struct sock *sk = sock->sk;
 298         struct atm_vcc *vcc = ATM_SD(sock);
 299         int error;
 300
 301         DPRINTK("svc_listen %p\n",vcc);
 302         lock_sock(sk);
 303         /* let server handle listen on unbound sockets */
 304         if (test_bit(ATM_VF_SESSION,&vcc->flags)) {
 305                 error = -EINVAL;
 306                 goto out;
 307         }
 308         set_bit(ATM_VF_WAITING, &vcc->flags);
 309         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 310         sigd_enq(vcc,as_listen,NULL,NULL,&vcc->local);
 311         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 312                 schedule();
 313                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 314         }
 315         finish_wait(sk->sk_sleep, &wait);
 316         if (!sigd) {
 317                 error = -EUNATCH;
 318                 goto out;
 319         }
 320         set_bit(ATM_VF_LISTEN,&vcc->flags);
 321         vcc->sk->sk_max_ack_backlog = backlog > 0 ? backlog :
 322                                                     ATM_BACKLOG_DEFAULT;
 323         error = -sk->sk_err;
 324 out:
 325         release_sock(sk);
 326         return error;
 327 }
 328
 329
 330 static int svc_accept(struct socket *sock,struct socket *newsock,int flags)
 331 {
 332         struct sock *sk = sock->sk;
 333         struct sk_buff *skb;
 334         struct atmsvc_msg *msg;
 335         struct atm_vcc *old_vcc = ATM_SD(sock);
 336         struct atm_vcc *new_vcc;
 337         int error;
 338
 339         lock_sock(sk);
 340
 341         error = svc_create(newsock,0);
 342         if (error)
 343                 goto out;
 344
 345         new_vcc = ATM_SD(newsock);
 346
 347         DPRINTK("svc_accept %p -> %p\n",old_vcc,new_vcc);
 348         while (1) {
 349                 DEFINE_WAIT(wait);
 350
 351                 prepare_to_wait(old_vcc->sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 352                 while (!(skb = skb_dequeue(&old_vcc->sk->sk_receive_queue)) &&
 353                        sigd) {
 354                         if (test_bit(ATM_VF_RELEASED,&old_vcc->flags)) break;
 355                         if (test_bit(ATM_VF_CLOSE,&old_vcc->flags)) {
 356                                 error = -sk->sk_err;
 357                                 break;
 358                         }
 359                         if (flags & O_NONBLOCK) {
 360                                 error = -EAGAIN;
 361                                 break;
 362                         }
 363                         release_sock(sk);
 364                         schedule();
 365                         lock_sock(sk);
 366                         if (signal_pending(current)) {
 367                                 error = -ERESTARTSYS;
 368                                 break;
 369                         }
 370                         prepare_to_wait(old_vcc->sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 371                 }
 372                 finish_wait(old_vcc->sk->sk_sleep, &wait);
 373                 if (error)
 374                         goto out;
 375                 if (!skb) {
 376                         error = -EUNATCH;
 377                         goto out;
 378                 }
 379                 msg = (struct atmsvc_msg *) skb->data;
 380                 new_vcc->qos = msg->qos;
 381                 set_bit(ATM_VF_HASQOS,&new_vcc->flags);
 382                 new_vcc->remote = msg->svc;
 383                 new_vcc->local = msg->local;
 384                 new_vcc->sap = msg->sap;
 385                 error = vcc_connect(newsock, msg->pvc.sap_addr.itf,
 386                                     msg->pvc.sap_addr.vpi, msg->pvc.sap_addr.vci);
 387                 dev_kfree_skb(skb);
 388                 old_vcc->sk->sk_ack_backlog--;
 389                 if (error) {
 390                         sigd_enq2(NULL,as_reject,old_vcc,NULL,NULL,
 391                             &old_vcc->qos,error);
 392                         error = error == -EAGAIN ? -EBUSY : error;
 393                         goto out;
 394                 }
 395                 /* wait should be short, so we ignore the non-blocking flag */
 396                 set_bit(ATM_VF_WAITING, &new_vcc->flags);
 397                 prepare_to_wait(new_vcc->sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 398                 sigd_enq(new_vcc,as_accept,old_vcc,NULL,NULL);
 399                 while (test_bit(ATM_VF_WAITING, &new_vcc->flags) && sigd) {
 400                         release_sock(sk);
 401                         schedule();
 402                         lock_sock(sk);
 403                         prepare_to_wait(new_vcc->sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 404                 }
 405                 finish_wait(new_vcc->sk->sk_sleep, &wait);
 406                 if (!sigd) {
 407                         error = -EUNATCH;
 408                         goto out;
 409                 }
 410                 if (!new_vcc->sk->sk_err)
 411                         break;
 412                 if (new_vcc->sk->sk_err != ERESTARTSYS) {
 413                         error = -new_vcc->sk->sk_err;
 414                         goto out;
 415                 }
 416         }
 417         newsock->state = SS_CONNECTED;
 418 out:
 419         release_sock(sk);
 420         return error;
 421 }
 422
 423
 424 static int svc_getname(struct socket *sock,struct sockaddr *sockaddr,
 425     int *sockaddr_len,int peer)
 426 {
 427         struct sockaddr_atmsvc *addr;
 428
 429         *sockaddr_len = sizeof(struct sockaddr_atmsvc);
 430         addr = (struct sockaddr_atmsvc *) sockaddr;
 431         memcpy(addr,peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
 432             sizeof(struct sockaddr_atmsvc));
 433         return 0;
 434 }
 435
 436
 437 int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos)
 438 {
 439         DEFINE_WAIT(wait);
 440
 441         set_bit(ATM_VF_WAITING, &vcc->flags);
 442         prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 443         sigd_enq2(vcc,as_modify,NULL,NULL,&vcc->local,qos,0);
 444         while (test_bit(ATM_VF_WAITING, &vcc->flags) &&
 445                !test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) {
 446                 schedule();
 447                 prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 448         }
 449         finish_wait(vcc->sk->sk_sleep, &wait);
 450         if (!sigd) return -EUNATCH;
 451         return -vcc->sk->sk_err;
 452 }
 453
 454
 455 static int svc_setsockopt(struct socket *sock, int level, int optname,
 456                           char __user *optval, int optlen)
 457 {
 458         struct sock *sk = sock->sk;
 459         struct atm_vcc *vcc = ATM_SD(sock);
 460         int value, error = 0;
 461
 462         lock_sock(sk);
 463         switch (optname) {
 464                 case SO_ATMSAP:
 465                         if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) {
 466                                 error = -EINVAL;
 467                                 goto out;
 468                         }
 469                         if (copy_from_user(&vcc->sap, optval, optlen)) {
 470                                 error = -EFAULT;
 471                                 goto out;
 472                         }
 473                         set_bit(ATM_VF_HASSAP, &vcc->flags);
 474                         break;
 475                 case SO_MULTIPOINT:
 476                         if (level != SOL_ATM || optlen != sizeof(int)) {
 477                                 error = -EINVAL;
 478                                 goto out;
 479                         }
 480                         if (get_user(value, (int __user *) optval)) {
 481                                 error = -EFAULT;
 482                                 goto out;
 483                         }
 484                         if (value == 1) {
 485                                 set_bit(ATM_VF_SESSION, &vcc->flags);
 486                         } else if (value == 0) {
 487                                 clear_bit(ATM_VF_SESSION, &vcc->flags);
 488                         } else {
 489                                 error = -EINVAL;
 490                         }
 491                         break;
 492                 default:
 493                         error = vcc_setsockopt(sock, level, optname,
 494                                                optval, optlen);
 495         }
 496
 497 out:
 498         release_sock(sk);
 499         return error;
 500 }
 501
 502
 503 static int svc_getsockopt(struct socket *sock,int level,int optname,
 504     char __user *optval,int __user *optlen)
 505 {
 506         struct sock *sk = sock->sk;
 507         int error = 0, len;
 508
 509         lock_sock(sk);
 510         if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) {
 511                 error = vcc_getsockopt(sock, level, optname, optval, optlen);
 512                 goto out;
 513         }
 514         if (get_user(len, optlen)) {
 515                 error = -EFAULT;
 516                 goto out;
 517         }
 518         if (len != sizeof(struct atm_sap)) {
 519                 error = -EINVAL;
 520                 goto out;
 521         }
 522         if (copy_to_user(optval, &ATM_SD(sock)->sap, sizeof(struct atm_sap))) {
 523                 error = -EFAULT;
 524                 goto out;
 525         }
 526 out:
 527         release_sock(sk);
 528         return error;
 529 }
 530
 531
 532 static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr,
 533                         int sockaddr_len, int flags)
 534 {
 535         DEFINE_WAIT(wait);
 536         struct atm_vcc *vcc = ATM_SD(sock);
 537         int error;
 538
 539         lock_sock(vcc->sk);
 540         set_bit(ATM_VF_WAITING, &vcc->flags);
 541         prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 542         sigd_enq(vcc, as_addparty, NULL, NULL,
 543                  (struct sockaddr_atmsvc *) sockaddr);
 544         if (flags & O_NONBLOCK) {
 545                 finish_wait(vcc->sk->sk_sleep, &wait);
 546                 error = -EINPROGRESS;
 547                 goto out;
 548         }
 549         DPRINTK("svc_addparty added wait queue\n");
 550         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 551                 schedule();
 552                 prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 553         }
 554         finish_wait(vcc->sk->sk_sleep, &wait);
 555         error = xchg(&vcc->sk->sk_err_soft, 0);
 556 out:
 557         release_sock(vcc->sk);
 558         return error;
 559 }
 560
 561
 562 static int svc_dropparty(struct socket *sock, int ep_ref)
 563 {
 564         DEFINE_WAIT(wait);
 565         struct atm_vcc *vcc = ATM_SD(sock);
 566         int error;
 567
 568         lock_sock(vcc->sk);
 569         set_bit(ATM_VF_WAITING, &vcc->flags);
 570         prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 571         sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref);
 572         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 573                 schedule();
 574                 prepare_to_wait(vcc->sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 575         }
 576         finish_wait(vcc->sk->sk_sleep, &wait);
 577         if (!sigd) {
 578                 error = -EUNATCH;
 579                 goto out;
 580         }
 581         error = xchg(&vcc->sk->sk_err_soft, 0);
 582 out:
 583         release_sock(vcc->sk);
 584         return error;
 585 }
 586
 587
 588 static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 589 {
 590         int error, ep_ref;
 591         struct sockaddr_atmsvc sa;
 592         struct atm_vcc *vcc = ATM_SD(sock);
 593
 594         switch (cmd) {
 595                 case ATM_ADDPARTY:
 596                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
 597                                 return -EINVAL;
 598                         if (copy_from_user(&sa, (void __user *) arg, sizeof(sa)))
 599                                 return -EFAULT;
 600                         error = svc_addparty(sock, (struct sockaddr *) &sa, sizeof(sa), 0);
 601                         break;
 602                 case ATM_DROPPARTY:
 603                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
 604                                 return -EINVAL;
 605                         if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int)))
 606                                 return -EFAULT;
 607                         error = svc_dropparty(sock, ep_ref);
 608                         break;
 609                 default:
 610                         error = vcc_ioctl(sock, cmd, arg);
 611         }
 612
 613         return error;
 614 }
 615
 616 static struct proto_ops svc_proto_ops = {
 617         .family =       PF_ATMSVC,
 618         .owner =        THIS_MODULE,
 619
 620         .release =      svc_release,
 621         .bind =         svc_bind,
 622         .connect =      svc_connect,
 623         .socketpair =   sock_no_socketpair,
 624         .accept =       svc_accept,
 625         .getname =      svc_getname,
 626         .poll =         vcc_poll,
 627         .ioctl =        svc_ioctl,
 628         .listen =       svc_listen,
 629         .shutdown =     svc_shutdown,
 630         .setsockopt =   svc_setsockopt,
 631         .getsockopt =   svc_getsockopt,
 632         .sendmsg =      vcc_sendmsg,
 633         .recvmsg =      vcc_recvmsg,
 634         .mmap =         sock_no_mmap,
 635         .sendpage =     sock_no_sendpage,
 636 };
 637
 638
 639 static int svc_create(struct socket *sock,int protocol)
 640 {
 641         int error;
 642
 643         sock->ops = &svc_proto_ops;
 644         error = vcc_create(sock, protocol, AF_ATMSVC);
 645         if (error) return error;
 646         ATM_SD(sock)->local.sas_family = AF_ATMSVC;
 647         ATM_SD(sock)->remote.sas_family = AF_ATMSVC;
 648         return 0;
 649 }
 650
 651
 652 static struct net_proto_family svc_family_ops = {
 653         .family = PF_ATMSVC,
 654         .create = svc_create,
 655         .owner = THIS_MODULE,
 656 };
 657
 658
 659 /*
 660  *      Initialize the ATM SVC protocol family
 661  */
 662
 663 int __init atmsvc_init(void)
 664 {
 665         return sock_register(&svc_family_ops);
 666 }
 667
 668 void atmsvc_exit(void)
 669 {
 670         sock_unregister(PF_ATMSVC);
 671 }